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/**
******************************************************************************
* This file is part of the TouchGFX 4.10.0 distribution.
*
* @attention
*
* Copyright (c) 2018 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
#include <gui/graph_screen/PieChart.hpp>
PieChart::PieChart():
minRadius(0),
maxRadius(0),
minAngle(0),
maxAngle(0),
centerX(0),
centerY(0),
animationRunning(false),
selectAnimationSteps(4),
selectionAction(0),
animationEndedAction(0),
animationEndedCallbackActive(false)
{
sliceSum = 0;
for (int i = 0; i < NUM_ITEMS; i++)
{
slice[i] = 0;
displacement[i] = 0;
expand[i] = 0;
selected[i] = false;
circle[i].setCenter(0, 0);
circle[i].setArc(0, 0);
circle[i].setVisible(false);
add(circle[i]);
}
startPieChartAnimation(0, 0, 0, 0, 0);
setTouchable(true);
}
void PieChart::setSlices(int newShares[NUM_ITEMS])
{
sliceSum = 0;
for (int i = 0; i < NUM_ITEMS; i++)
{
slice[i] = newShares[i];
sliceSum += slice[i];
}
}
#if !defined(USE_BPP) || USE_BPP==16
void PieChart::setPainter(int index, AbstractPainterRGB565& painter)
#elif USE_BPP==24
void PieChart::setPainter(int index, AbstractPainterRGB888& painter)
#elif USE_BPP==4
void PieChart::setPainter(int index, AbstractPainterGRAY4& painter)
#elif USE_BPP==2
void PieChart::setPainter(int index, AbstractPainterGRAY2& painter)
#else
#error Unknown USE_BPP
#endif
{
if (index >= 0 && index < NUM_ITEMS)
{
circle[index].setPainter(painter);
}
}
void PieChart::setRadiuses(int innerRadius, int outerRadius)
{
this->minRadius = innerRadius;
this->maxRadius = outerRadius;
recalculatePieChart();
}
void PieChart::setAngles(int newMinAngle, int newMaxAngle)
{
minAngle = newMinAngle;
maxAngle = newMaxAngle;
recalculatePieChart();
}
void PieChart::getAngles(int& currentMinAngle, int& currentMaxAngle) const
{
currentMinAngle = minAngle;
currentMaxAngle = maxAngle;
}
void PieChart::setPieChart(int newStartAngle, int newEndAngle, int newMinRadius, int newMaxRadius)
{
setAngles(newStartAngle, newEndAngle);
setRadiuses(newMinRadius, newMaxRadius);
// Set new 'exit' parameters, these will be pushed to Init parameters when the animation starts
startAngleExit = minAngle;
endAngleExit = maxAngle;
minRadiusExit = newMinRadius;
maxRadiusExit = newMaxRadius;
}
void PieChart::setCenter(int newCenterX, int newCenterY)
{
centerX = newCenterX;
centerY = newCenterY;
recalculatePieChart();
}
void PieChart::setSelectAnimationSteps(int steps)
{
if (steps >= 0)
{
selectAnimationSteps = steps;
}
}
void PieChart::setSelected(int index, bool value)
{
if (index < 0 || index >= NUM_ITEMS)
{
return;
}
if (value == selected[index])
{
return;
}
selected[index] = value;
expand[index] = value ? 1 : -1;
animateSelected(selectAnimationSteps);
// Update legend
if (selectionAction && selectionAction->isValid())
{
selectionAction->execute(*this, index);
}
}
bool PieChart::isSelected(int share) const
{
return (share >= 0 && share < NUM_ITEMS) ? selected[share] : false;
}
void PieChart::unselectAll()
{
// Stop animation
animationRunning = false;
for (int i = 0; i < NUM_ITEMS; i++)
{
selected[i] = 0;
expand[i] = 0;
displacement[i] = 0;
}
recalculatePieChart();
}
void PieChart::recalculatePieChart()
{
if (sliceSum == 0)
{
return;
}
int accum = 0;
for (int i = 0; i < NUM_ITEMS; i++)
{
int lineWidth = (maxRadius - minRadius);
circle[i].setVisible(lineWidth > 0);
if (minRadius > 0)
{
circle[i].setRadius(minRadius + lineWidth / 2);
circle[i].setLineWidth(lineWidth);
}
else
{
circle[i].setRadius(maxRadius);
circle[i].setLineWidth(0);
}
int arcStart = minAngle + accum * (maxAngle - minAngle) / sliceSum;
accum += slice[i];
int arcEnd = minAngle + accum * (maxAngle - minAngle) / sliceSum;
circle[i].updateArcStart(arcStart);
circle[i].updateArcEnd(arcEnd);
int middleAngle = (arcStart + arcEnd) / 2;
if (displacement[i] != 0)
{
circle[i].setCenter(centerX + (CWRUtil::toQ5(displacement[i]) * CWRUtil::sine(middleAngle)).to<int>(),
centerY - (CWRUtil::toQ5(displacement[i]) * CWRUtil::cosine(middleAngle)).to<int>());
}
else
{
circle[i].setCenter(centerX, centerY);
}
}
}
void PieChart::startPieChartAnimation(int toStartAngle, int toEndAngle, int toMinRadius, int toMaxRadius, int steps, EasingEquation newAngleEquation /*= &EasingEquations::linearEaseNone*/, EasingEquation newRadiusEquation /*= &EasingEquations::linearEaseNone*/)
{
// Use current 'exit' position as the 'init' position
startAngleInit = startAngleExit;
endAngleInit = endAngleExit;
minRadiusInit = minRadiusExit;
maxRadiusInit = maxRadiusExit;
// Set new 'exit' parameters
startAngleExit = toStartAngle;
endAngleExit = toEndAngle;
minRadiusExit = toMinRadius;
maxRadiusExit = toMaxRadius;
currentStep = 0;
animationSteps = steps;
this->angleEquation = newAngleEquation;
this->radiusEquation = newRadiusEquation;
Application::getInstance()->registerTimerWidget(this);
animationRunning = true;
animationType = CHANGE_PIECHART;
}
void PieChart::animateSelected(int steps, EasingEquation progressionEquation)
{
this->currentStep = 0;
this->animationSteps = steps;
angleEquation = progressionEquation;
Application::getInstance()->registerTimerWidget(this);
animationRunning = true;
animationType = SELECT_DESELECT;
}
void PieChart::setPieChartSelectionCallback(GenericCallback<const PieChart&, int>& callback)
{
selectionAction = &callback;
}
void PieChart::setPieChartAnimationEndedCallback(GenericCallback<const PieChart&>& callback)
{
animationEndedAction = &callback;
animationEndedCallbackActive = true;
}
void PieChart::activatePieChartAnimationEndedCallback(bool active)
{
animationEndedCallbackActive = active;
}
void PieChart::setWidth(int16_t width)
{
Container::setWidth(width);
for (int i = 0; i < NUM_ITEMS; i++)
{
circle[i].setWidth(width);
}
}
void PieChart::setHeight(int16_t height)
{
Container::setHeight(height);
for (int i = 0; i < NUM_ITEMS; i++)
{
circle[i].setHeight(height);
}
}
void PieChart::handleClickEvent(const ClickEvent& evt)
{
if (animationRunning)
{
return;
}
if (evt.getType() == ClickEvent::PRESSED)
{
int x = evt.getX() - centerX;
int y = evt.getY() - centerY;
int distance;
int angle = CWRUtil::angle(x, y, distance);
while (angle - minAngle > 360)
{
angle -= 360;
}
while (angle - minAngle < 0)
{
angle += 360;
}
if (angle >= minAngle && angle <= maxAngle && ((distance >= minRadius && distance <= maxRadius) || distance < 20))
{
bool allExpanded = true;
int selectedCount = 0;
for (int i = 0; i < NUM_ITEMS; i++)
{
allExpanded &= (displacement[i] > 0);
selectedCount += (displacement[i] > 0) ? 1 : 0;
}
// Inside pie chart
if (distance < 20)
{
// Click in the middle
if (allExpanded) // All expanded
{
// Hide all
for (int i = 0; i < NUM_ITEMS; i++)
{
if (displacement[i] > 0) // Expanded
{
setSelected(i, false);
}
}
}
else
{
// Expand all
for (int i = 0; i < NUM_ITEMS; i++)
{
if (displacement[i] == 0) // Expanded
{
setSelected(i, true);
}
}
}
}
else
{
// Clicked a single slice
for (int i = 0; i < NUM_ITEMS; i++)
{
expand[i] = 0;
if (angle >= circle[i].getArcStart() && angle < circle[i].getArcEnd())
{
// Clicked this slice
if (displacement[i] > 0)
{
if (selectedCount < 2)
{
setSelected(i, false);
}
}
else
{
setSelected(i, true);
}
}
else
{
// Collapse all slices that have not been clicked
if (displacement[i] > 0)
{
setSelected(i, false);
}
}
}
}
}
}
}
void PieChart::handleTickEvent()
{
Container::handleTickEvent();
if (animationRunning)
{
switch (animationType)
{
case CHANGE_PIECHART:
{
int newStartAngle = angleEquation(currentStep, startAngleInit, startAngleExit - startAngleInit, animationSteps);
int newEndAngle = angleEquation(currentStep, endAngleInit, endAngleExit - endAngleInit, animationSteps);
int newMinRadius = radiusEquation(currentStep, minRadiusInit, minRadiusExit - minRadiusInit, animationSteps);
int newMaxRadius = radiusEquation(currentStep, maxRadiusInit, maxRadiusExit - maxRadiusInit, animationSteps);
setAngles(newStartAngle, newEndAngle);
setRadiuses(newMinRadius, newMaxRadius);
}
break;
case SELECT_DESELECT:
{
int showRadius = angleEquation(currentStep, 0, DISPLACEMENT, animationSteps);
int hideRadius = angleEquation(currentStep, DISPLACEMENT, -DISPLACEMENT, animationSteps);
for (int i = 0; i < NUM_ITEMS; i++)
{
switch (expand[i])
{
case -1:
displacement[i] = hideRadius;
break;
case 1:
displacement[i] = showRadius;
break;
}
}
recalculatePieChart();
}
break;
}
if (isVisible())
{
invalidate();
}
currentStep++;
if (currentStep > animationSteps)
{
Application::getInstance()->unregisterTimerWidget(this);
animationRunning = false;
for (int i = 0; i < NUM_ITEMS; i++)
{
expand[i] = 0;
}
if (animationEndedCallbackActive && animationEndedAction && animationEndedAction->isValid())
{
animationEndedAction->execute(*this);
}
}
}
}